Answers

Add 81/30 and 81/90

1^st number: 2 21/30, 2^nd number: 81/90

81/30 + 81/90 is 18/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 30 × 3 = 90,
   81/30 = 81 × 3/30 × 3 = 243/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   81/90 = 81 × 1/90 × 1 = 81/90
4. Add the two like fractions:
   243/90 + 81/90 = 243 + 81/90 = 324/90
5. 324/90 simplified gives 18/5
6. So, 81/30 + 81/90 = 18/5
   In mixed form: 33/5

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